iOS圖片存在本地、再從本地擷取圖片，ios圖片存在擷取

iOS圖片存在本地、再從本地擷取圖片，ios圖片存在擷取

圖片存在本地、再從本地擷取圖片

//將圖片儲存到本地+ (void)SaveImageToLocal:(UIImage*)image Keys:(NSString*)key {    NSUserDefaults* preferences = [NSUserDefaults standardUserDefaults];    //[preferences persistentDomainForName:LocalPath];    [preferences setObject:UIImagePNGRepresentation(image) forKey:key];} //本地是否有相關圖片+ (BOOL)LocalHaveImage:(NSString*)key {    NSUserDefaults* preferences = [NSUserDefaults standardUserDefaults];    //[preferences persistentDomainForName:LocalPath];    NSData* imageData = [preferences objectForKey:key];    if (imageData) {        return YES;    }    return NO;} //從本地擷取圖片+ (UIImage*)GetImageFromLocal:(NSString*)key {    NSUserDefaults* preferences = [NSUserDefaults standardUserDefaults];    //[preferences persistentDomainForName:LocalPath];    NSData* imageData = [preferences objectForKey:key];    UIImage* image;    if (imageData) {        image = [UIImage imageWithData:imageData];    }    else {        NSLog(@"未從本地獲得圖片");    }    return image;}